Digital variable frequency defibrillator and variable frequency pulse control method thereof

Abstract

The invention provides a digital variable frequency defibrillator which comprises a digital controller and a pulse output circuit, wherein the pulse output circuit comprises a power supply, a half-bridge inverter circuit, a pre-transformer, a full-bridge rectifier circuit, a soft switching circuit, a voltage division circuit, an LC (inductance-capacitance) resonance circuit, a post transformer and a discharge electrode which are sequentially connected; the power supply, the half-bridge inverter circuit, the full-bridge rectifier circuit, the soft switching circuit, the voltage division circuit and the LC resonance circuit are respectively connected with the digital controller by a power supply voltage detection circuit, a half-bridge inverter MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor) driving circuit, a soft switching MOSFET driving circuit, an after-rectifying voltage monitoring circuit and an LC resonance thyristor driving circuit. The invention also discloses a variable frequency pulse control method, solves the problems of uncontrollability of pulse frequency and low utilization rate of energy in the prior art and improves working efficiency, reliability and service life of a system.

Description

technical field [0001] The invention belongs to the technical field of power electronics, and in particular relates to a digital frequency-variable electric shock device, and also relates to a control method of frequency-variable pulses. Background technique [0002] At present, domestic and foreign electric shocker products use DC high-voltage pulses and AC high-voltage pulses to strike targets. The working principle and characteristics of the existing electric shock device: [0003] The DC high-voltage pulse electric shocker adopts a voltage doubler circuit to increase the voltage to a level that can break down the air discharge to achieve the electric shock process. The disadvantage is that the output voltage frequency is uncontrollable, the voltage level is not high, it is greatly affected by the environment, and the load capacity is poor. Outputting a small power will cause the output voltage to drop sharply. When the number of boost stages increases, the circuit struc...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a digital variable frequency electric shocker, which solves the problems of uncontrollable pulse frequency and low energy utilization in the prior art

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